Page-specific CSS with Rails App

[aarikan]

I would like to test out two different interfaces for my Rails application. Ideally, I'd like to have two separate css files, one associated with each interface (e.g., new_interface.css and old_interface.css). I currently have two different partials for the interfaces, one called _new_interface.html.erb and one called _old_interface.html.erb. If I'd like to invoke the correct css file when a particular view is loaded, how would I do this? For example, if I load _new_interface.html.erb, I want it to load the new_interface.css file and ignore the old_interface.css file.My application.css:\[code\]/**= require_tree*/\[/code\]